java play framework 2.1.3如何檢索路由對象

Question

我想知道如何從global.java類中的字符串中檢索路由對象，因爲我試圖做一個動態模塊路由：我不想編輯我 主要航線，每次我添加一個模塊（子項目）作爲

- >/mymodule中mymodule.Routes

因此，爲了避免這種情況，我特林目標路徑依賴的加載URI路徑。 /模塊/ mymodule中

我tryed寫一些代碼，遵循內部onRouteRequest（）

Class.forName("mymodule.Routes").routes.lift(request); 

，但失敗了，有什麼建議？

編輯1：在播放1是可能的類似的東西：

/{controller}/{action} {controller}.{action} 

但play2似乎不工作以及

編輯2：我目前Global.java是

import play.GlobalSettings; 
import play.Play; 
import play.api.mvc.Handler; 
import play.mvc.Http; 

public class Global extends GlobalSettings 
{ 

@Override 
public Handler onRouteRequest(Http.RequestHeader request) 
{ 
    String path = request.path(); 
    if (path.startsWith("/module/")) 
    { 
     String[] paths = path.split("/"); 
     String router = paths[2]; 
     try 
     { 
      return (Handler) Class.forName(router + ".Routes", true, Play.application().classloader()).newInstance(); 
     } 
     catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) 
     { 
      e.printStackTrace(); 
     } 
    } 
    return super.onRouteRequest(request); 
} 
} 

他找到了正確的路線，但發現了瞬發異常

Answer 1

在這個框架中，對於scala而言，它有點沮喪。幾天後，我決定在每次啓動服務器時執行自動處理在主路徑文件中寫入新內容。

import java.io.BufferedReader; 
import java.io.BufferedWriter; 
import java.io.File; 
import java.io.FileReader; 
import java.io.FileWriter; 
import java.io.IOException; 

import play.Application; 
import play.GlobalSettings; 

public class Global extends GlobalSettings 
{ 
@Override 
public void onStart(Application app) 
{ 
    String newline = System.getProperty("line.separator"); 
    File route = app.getFile("/conf/routes"); 
    File[] modules = app.getFile("/modules").listFiles(); 

    String newContents = "# start of autogenerated code" + newline; 
    for (File module : modules) 
    { 
     String moduleLow = module.getName().toLowerCase(); 
     newContents += "-> /module " + moduleLow + ".Routes " + newline; 
    } 
    newContents += "# end of autogenerated code" + newline; 
    editRoute(route, newContents, newline); 

} 

private void editRoute(File route, String newContents, String newline) 
{ 
    try 
    { 
     FileReader f = new FileReader(route); 
     BufferedReader br = new BufferedReader(f); 
     String contents = ""; 
     while (true) 
     { 
      String s = br.readLine(); 
      if (s == null) 
       break; 
      contents += s + newline; 
     } 
     br.close(); 

     FileWriter w = new FileWriter(route); 
     BufferedWriter b = new BufferedWriter(w); 
     b.write(newContents + contents); 
     b.flush(); 
     b.close(); 
    } 
    catch (IOException e) 
    { 
     e.printStackTrace(); 
    } 
} 

@Override 
public void onStop(Application app) 
{ 
    String newline = System.getProperty("line.separator"); 
    File route = app.getFile("/conf/routes"); 
    try 
    { 
     FileReader f = new FileReader(route); 
     BufferedReader br = new BufferedReader(f); 
     String contents = ""; 
     boolean startAutoCode = false; 
     boolean endAutoCode = false; 
     while (true) 
     { 
      String s = br.readLine(); 
      if (s == null) 
       break; 
      if (s.contains("# start of autogenerated code")) 
      { 
       startAutoCode = true; 
      } 
      else if (s.contains("# end of autogenerated code")) 
      { 
       endAutoCode = true; 
       continue; 
      } 

      if (!startAutoCode || endAutoCode) 
      { 
       contents += s + newline; 
      } 
     } 
     br.close(); 

     FileWriter w = new FileWriter(route); 
     BufferedWriter b = new BufferedWriter(w); 
     b.write(contents); 
     b.flush(); 
     b.close(); 
    } 
    catch (IOException e) 
    { 
     e.printStackTrace(); 
    } 
} 
}